Double-booking risk calculator
Selling the same night twice almost always comes from one thing: the lag between when a room sells on one channel and when the others find out. Answer four questions and see how exposed your setup is. Nothing you enter is sent anywhere or stored.
OTAs and direct sites where the same room can be booked.
How busy a good weekend gets across all channels.
How far ahead guests usually book.
With 2 channels kept in sync by free iCal links that each platform polls every one to several hours rather than instantly, and 4 to 10 bookings as same-week bookings, the lag window is real but rarely crowded. Most of the time it closes before a second booking arrives, but a sudden peak can still catch you.
What closes the gap: real-time two-way sync so a night sold on one channel is blocked everywhere before the next guest can book it.
How does this risk score work?
It is a qualitative read, not a probability. It looks at how many channels you sell on, how those calendars stay in sync, how many bookings land in a peak week, and how short your booking lead times are. One channel can never conflict with itself, so it is always low. Real-time sync closes the gap to seconds. iCal and hand updates leave a lag window open, and the score rises as more channels, higher volume and shorter lead times make that window more likely to catch two bookings for the same night.
What is iCal lag?
iCal links share blocked dates between platforms, but nothing pushes instantly. Each platform polls the others on its own schedule, typically every one to several hours. Between polls a night you just sold on one channel still shows available on the rest. That stretch of time is the iCal lag, and it is the live window where the same room can sell twice.
Does this tool store any of my answers?
No. The calculator runs entirely in your browser. Your answers are never sent anywhere, never saved, and disappear the moment you close the tab. There is no account, no tracking of your inputs and no server call to score them.